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Journal of Experimental Hematology ; (6): 1039-1049, 2021.
Article in Chinese | WPRIM | ID: wpr-888516


OBJECTIVE@#To analyze the hub genes affecting the solely bone marrow relapse of childish acute B-cell lymphoblastic leukemia (B-ALL).@*METHODS@#The high-throughput RNA sequencing data were downloaded from TCGA database, the differentially expressed genes were screened by DESeq2 package of R, and the differentially expressed genes were grouped by GO function enrichment analysis and KEGG pathway enrichment analysis. Further, the data of STRING database and Cytoscape software were used to construct protein interaction network, screen hub genes and highly interaction protein sub network, perform GO and KEGG analysis of the hub genes and protein sub network respectively. JASPAR database was used to screen the upstream transcription factor of the hub gene promoter. Survival analysis based on the expression of hub genes was performed with clinical information attached to TCGA database. The bone marrow samples and clinical data of the patients were collected, the analysis results of hub genes were verified through clinical samples.@*RESULTS@#847 differentially expressed genes were collected, including 813 up-regulated genes, 34 down-regulated genes, 11 hub genes were screened out. The results of survival analysis showed that RPS5、RPS15、RPL23、RPL35、RPS8、RPS27A、RPS3、RPL9、RPS21、RPS7 and RPL38 showed significant effect on the survival of the children, and ZNF460 might be involved in their regulation. The high expressions of RPS3, RPS15, RPS8, RPS27A, and RPS21 had been verified in clinical samples of solely bone marrow relapsed patients.@*CONCLUSION@#RPS3, RPS15, RPS8, RPS27A, RPS21 can be used as biomarkers to indicate the malignant event of solely bone marrow relapse, which may be regulated by ZNF460.

Bone Marrow , Child , Computational Biology , Gene Expression Profiling , Gene Expression Regulation, Neoplastic , Humans , Leukemia, B-Cell , Precursor Cell Lymphoblastic Leukemia-Lymphoma , Recurrence
Article in Chinese | WPRIM | ID: wpr-664894


Oligosaccharide isomers were distinguished by electron capture dissociation Fourier transform ion cyclotron resonance mass spectrometry ( ECD-FT-ICR-MS ) in combination with utiliZing alkali, alkaline earth, and transition metals ( Na+, Ca2+, Ba2+, Mg2+, Mn2+ and Co2+) as charge carriers in electrospray.Maltoheptaose, mannohexaose and laminarihexaose were taken as examples to investigate influence of metal ions on the extent of oligosaccharide fragmentation.The same types of fragmentation ions ( 0,2 A and 2,4 A) were obtained for barium- and calcium-adducted maltoheptaose.Mg2+ and Mn2+ had the similar influence ( 0,2 A, 2,4 A and 2,5 A ).Three cross-ring cleavage ions ( 1,4 A, 2,4 A and 2,5 A ) were generated in the spectrum of cobalt-associated maltoheptaose.But in the case of doping Na+into maltoheptaose, only 0,2 A ion was detected.It was found that the signals in the spectra of mannohexaose and laminarihexaose were worse than that in the spectrum of maltoheptaose, probably resulting from different numbers of adducted metal ions.The isomers, mannohexaose and laminarihexaose could be distinguished by ECD-MS in conjunction with the addition of Ca2+, Mg2+ or Co2+.The addition of Ca2+ was the best choice for analysis of oligosaccharides.

Article in Chinese | WPRIM | ID: wpr-668327


BACKGROUND: Bone marrow mesenchymal stem cells (BMSCs) are a kind of pluripotent stem cells in the bone marrow. Drug-containing serum treatment may be followed by a variation in the expression of genes involved in multiple signaling pathways. OBJECTIVE: To study the effect of compound Jiegu Tablets and Zhuanggu Tablets on the differentiation of BMSCs in vitro. METHODS: Sixty Sprague-Dawley rats were randomized into Jiegu group, Zhuanggu group, combined group and blank control group. Different drug-containing sera were prepared and used to culture BMSCs isolated from the rat bone marrow. RT-PCR and western blot assay were used to detect the expression of BMP-2, Runx2, VEGF and Akt at mRNA and protein levels, respectively, at 24 hours after culture.RESULTS AND CONCLUSION: Compared with the blank control group, the expression levels of Akt and VEGF mRNA and protein were significantly increased in the Jiegu group and combined group (P < 0.05 or P < 0.01), but showed no difference in the Zhuanggu group (P > 0.05). Compared with the blank control group, the expression levels of BMP-2 and Runx2 mRNA and protein were significantly increased in the Jiegu group (P < 0.05) and very significantly increased in the Zhuanggu group and combined group (P < 0.01). These findings indicate that compound Jiegu Tablets and Zhuanggu Tablets containing sera lead to synergistic effects on the BMSCs differentiation into vascular endothelial cells and osteoblasts in vitro.